2242

A medical record seen in TOS: "Where No Man Has Gone Before" lists Gary Mitchell as 23 years old. If this was his age at the time of the episode, set in 2265, that would mean he was born in 2242. It is unknown, however, if that record was from Mitchell's last psychological examination (which could have been several years prior) or if was more recent. The record also lists him as being born in the city of Eldman on stardate 1087.7.

An early draft of TOS: "Miri" would have established that Janice Rand was twenty-four years old at that time, and thus would have been born in this year.